Home › Words › P › pseudoproteinpseudoproteinpseudoprotein · noun — A man-made polypeptide that has some properties of a protein.Definition from Wiktionary (CC BY-SA 3.0).EtymologyFrom pseudo- + protein.nounA man-made polypeptide that has some properties of a proteinDefinitions & examples from Wiktionary (CC BY-SA 3.0).